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nounany of the unicellular protiststype of:
Definition that contains protoctist
- kingdom the highest taxonomic group into which organisms are grouped; one of five biological categories: Monera or Protoctista or Plantae or Fungi or Animalia
- chondrus a genus of protoctist
- genus leucocytozoon a genus of protoctist
- order ulvales an order of protoctist
- family globigerinidae a family of protoctists
- genus spirogyra a genus of protoctist
- family bangiaceae a family of protoctist
- class acrasiomycetes cellular slime molds; in some classifications placed in kingdom Protoctista
- protoctist genus any genus of Protoctista
- slime mold a naked mass of protoplasm having characteristics of both plants and animals; sometimes classified as protoctists